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Here is Source code of a commonly asked C++ job interview question: Fibonacci series

(Last Updated On: May 18, 2010)

Here is Source code of a commonly asked C++ job interview question: Fibonacci series

#include

int main()
{
//define first two fibonacci series numbers.
int fib1 = 0;
int fib2 = 1;

//declare the variable to store the next number of fibonacci series
int fib3;

//declare the variable to store how many numbers to be printed. Default is 2.
int numbers = 2;

//the counter to keep track how many numbers are printed.
int counter = 2;

//Ask user how many numbers of the fibonacci series need to be printed.
std::cout << "How many Fibonacci number you need ? : " ; //Store the number. std::cin >> numbers;

//If number entered is less than 3, exit the program.
if (numbers < 3) return 0; //Print the first two element. std::cout << fib1 << "\t" << fib2; //do-while loop to calculate the new element of the series and printing the same. do { counter++; fib3 = fib1 + fib2; std::cout << "\t" << fib3; fib1 = fib2; fib2 = fib3; } while (counter <= numbers); std::cout << std::endl; system("pause"); return 0; }

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